TRUCKS INVOLVED IN FATAL ACCIDENTS, CODEBOOK 1996

This report provides one-way frequencies for all the vehicles in UMTRI's file of Trucks Involved in Fatal Accidents, 1996. The TIFA database provides coverage of all medium and heavy trucks recorded in the Fatal Accident Reporting Systems (FARS) file. TIFA combines vehicle, accident, and occupant records from FARS with information about the physical configuration and operating authority of the truck from the TIFA survey. Some sampling was done in selecting cases for the file. All cases in which the truck driver was killed were sampled with certainty. All cases occurring in Michigan were taken with certainty. Half the cases where the FARS body type and vehicle trailering variables indicated the vehicle was a straight truck with no trailer or a tractor with one trailer were taken. All other cases coded as a truck in the FARS body type variable were taken.